Demonstration of a synthetic frequency immune to the blackbody radiation shift with a dual optical lattice clock system

• Project/Area Number: 24740281
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: DAISUKE Akamatsu 独立行政法人産業技術総合研究所, 物理計測標準研究部門, 主任研究員 (90549883)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 光格子時計 / 黒体放射 / 精密計測 / 光周波数コム / 計測標準 / レーザー分光 / レーザー冷却

Outline of Final Research Achievements

To reduce the frequency uncertainty due to the blackbody radiation, we aimed to develop a system, in which two optical lattice clocks of Sr and Yb can be operated simultaneously. In this research, we successfully magneto-optically trapped two atomic species of Sr and Yb simultaneously and loaded them into optical lattices at each magic wavelength. We also successfully observed the clock transitions of Sr and Yb.

Research Products

• [Journal Article] Frequency ratio measurement of 171Yb and 87Sr optical lattice clocks (2014)
  • Author(s): D. Akamatsu, M. Yasuda, H. Inaba, K. Hosaka, T. Tanabe, A. Onae, and F. -L. Hong
  • Journal Title: Optics Express Volume: 22 Issue: 7 Pages: 7898-7905
  • DOI: 10.1364/oe.22.007898
  • Peer Reviewed
• [Journal Article] Spectroscopy and frequency measurement of the 87Sr clock transition by laser linewidth transfer using an optical frequency comb (2014)
  • Author(s): D. Akamatsu, H. Inaba, K. Hosaka, M. Yasuda, A. Onae, T. Suzuyama, M. Amemiya, and F. -L. Hong
  • Journal Title: Applied Physics Express Volume: 7 Issue: 1 Pages: 012401-012401
  • DOI: 10.7567/apex.7.012401
  • Peer Reviewed
• [Journal Article] Spectroscopy of 171Yb in an optical lattice based on laser linewidth transfer using a narrow linewidth frequency comb (2013)
  • Author(s): H. Inaba, K. Hosaka, M. Yasuda, Y. Nakajima, K. Iwakuni, D. Akamatsu, S. Okubo, T. Kohno, A. Onae, and F.-L. Hong
  • Journal Title: Optics Express Volume: 21 Pages: 7891-7896
  • Peer Reviewed
• [Journal Article] Narrow linewidth laser system realized by linewidth transfer using a fiber-based frequency comb for the magneto-optical trapping of strontium (2012)
  • Author(s): Daisuke Akamatsu, Yoshiaki Nakajima, Hajime Inaba, Kazumoto Hosaka, Masami Yasuda, Atsushi Onae, and Feng-Lei Hong
  • Journal Title: Optics Express Volume: 20 Issue: 14 Pages: 16010-16016
  • DOI: 10.1364/oe.20.016010
  • Peer Reviewed
• [Journal Article] Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards a Candidate for the Redefinition of the Second (2012)
  • Author(s): Masami Yasuda, Hajime Inaba, Takuya Kohno, Takehiko Tanabe, Yoshiaki Nakajima, Kazumoto Hosaka, Daisuke Akamatsu, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, Feng-Lei Hong
  • Journal Title: Applied Physics Express Volume: Vol.5 Issue: 10 Pages: 102401-102401
  • DOI: 10.1143/apex.5.102401
  • NAID: 10031117548
  • Peer Reviewed
• [Presentation] Present status of the Yb/Sr dual optical lattice clock at NMIJ (2014)
  • Author(s): D. Akamatsu, M. Yasuda, T. Tanabe, S. Okubo, H. Inaba, K. Hosaka, A. Onae, F. -L. Hong
  • Organizer: 2014 NMIJ-KRISS-ECNU Workshop on Time and Frequency
  • Place of Presentation: AIST Tokyo Waterfront Annex, 東京
  • Year and Date: 2014-12-01
• [Presentation] Dual species intercombination MOT of 171Yb and 87Sr: Toward a dual optical lattice clock (2014)
  • Author(s): D. Akamatsu, M. Yasuda, H. Inaba, K. Hosaka, S. Okubo, T. Tanabe, A. Onae, F. -L. Hong
  • Organizer: The 24th International Conference on Atomic Physics (ICAP2014)
  • Place of Presentation: Mayflower Renaissance Hotel, Washington, D.C., 米国
  • Year and Date: 2014-08-03 – 2014-08-08
• [Presentation] Precise measurement of the frequency ratio between Yb and Sr clock transitions (2013)
  • Author(s): Daisuke Akamatsu, Hajime Inaba, Kazumoto Hosaka, Masami Yasuda, Takehiko Tanabe, Atsushi Onae and Feng-Lei Hong
  • Organizer: Workshop on the Optical Frequency Standards
  • Place of Presentation: 東京都、（独）情報通信研究機構（小金井）
• [Presentation] 異種原子光格子時計を用いた時計遷移周波数比の精密計測 (2013)
  • Author(s): 赤松大輔、安田正美、稲場肇、保坂一元、田邊健彦、大苗敦、洪鋒雷
  • Organizer: 日本物理学会第６８回年次大会
  • Place of Presentation: 広島県、広島大学
• [Presentation] Realization of a Sr optical lattice clock - Towards a Sr/Yb dual optical lattice clock (2012)
  • Author(s): Daisuke Akamatsu, Hajime Inaba, Kazumoto Hosaka, Masami Yasuda, Atsushi Onae, Tomonari Suzuyama, Masaki Amemiya, and Feng-Lei Hong
  • Organizer: 5th International Workshop on Ultracold Group II Atoms
  • Place of Presentation: 東京都、（独）情報通信研究機構（小金井）
  • Invited
• [Presentation] Development of the 87Sr Optical Lattice Clock at NMIJ (2012)
  • Author(s): D. Akamatsu, H. Inaba, K. Hosaka, M. Yasuda, A. Onae, T. Suzuyama, M. Amemiya, and F. –L. Hong
  • Organizer: Workshop on Optical Comb, Clock, and Related Devices
  • Place of Presentation: 茨城県、（独）産業技術総合研究所（つくば中央）
• [Presentation] 線幅転送を利用したSr光格子時計の時計遷移の観測 (2012)
  • Author(s): 赤松大輔、稲場肇、安田正美、保坂一元、大苗敦、洪鋒雷
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 神奈川県、横浜国立大学
• [Presentation] 異種原子光格子時計を用いた時計遷移周波数比の精密計測II
  • Author(s): 赤松大輔、安田正美、稲場肇、保坂一元、大久保章、田邊健彦、大苗敦、洪鋒雷
  • Organizer: 日本物理学会２０１３年秋季大会
  • Place of Presentation: 徳島大学（徳島県徳島市）
• [Presentation] Measurement of optical frequency ratio with Sr and Yb optical lattice clocks
  • Author(s): Daisuke Akamatsu, Masami Yasuda, Hajime Inaba, Kazumoto Hosaka, Takehiko Tanabe, Atsushi Onae and Feng-Lei Hong
  • Organizer: International Conference on Laser Spectroscopy 2013 (ICOLS2013)
  • Place of Presentation: Claremont Hotel, Berkeley, 米国
• [Remarks] 産業技術総合研究所波長標準研究室ホームページ
  • URL: https://www.nmij.jp/~time-freq/wavelgt-std/
• [Remarks] 波長標準研究室
  • URL: http://www.nmij.jp/~time-freq/wavelgt-std/
• [Remarks] 波長標準研究室
  • URL: https://www.nmij.jp/~time-freq/wavelgt-std/